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<div class="navpath"><a class="el" href="namespaceitk.html">itk</a>::<a class="el" href="classitk_1_1CompositeValleyFunction.html">CompositeValleyFunction</a>
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<h1>itk::CompositeValleyFunction Class Reference</h1><!-- doxytag: class="itk::CompositeValleyFunction" --><!-- doxytag: inherits="itk::CacheableScalarFunction" -->Multiple valley shaped curve function.
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a>></code>
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Inheritance diagram for itk::CompositeValleyFunction:</div>
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Collaboration diagram for itk::CompositeValleyFunction:</div>
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<p><center><img src="classitk_1_1CompositeValleyFunction__coll__graph.png" border="0" usemap="#itk_1_1CompositeValleyFunction__coll__map" alt="Collaboration graph"></center>
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<area shape="rect" id="node2" href="classitk_1_1CacheableScalarFunction.html" title="function cache implementation" alt="" coords="69,277,285,307"><area shape="rect" id="node4" href="classitk_1_1Array.html" title="itk::Array\< MeasureType \>" alt="" coords="76,181,279,211"><area shape="rect" id="node6" href="classvnl__vector.html" title="vnl_vector\< MeasureType  \>" alt="" coords="5,85,216,115"><area shape="rect" id="node8" href="classitk_1_1Array.html" title="Array class with size defined at construction time." alt="" coords="240,85,427,115"><area shape="rect" id="node10" href="classvnl__vector.html" title="vnl_vector\< TValueType \>" alt="" coords="235,5,432,35"></map>
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<a href="classitk_1_1CompositeValleyFunction-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
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<tr><td colspan="2"><br><h2>Public Types</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef <br class="typebreak">
<a class="el" href="classitk_1_1Array.html">Superclass::MeasureArrayType</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CompositeValleyFunction.html#0121eac6e8bebe212574930b0342013a">MeasureArrayType</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef <a class="el" href="classitk_1_1CacheableScalarFunction.html#3e6333600aacf7275e6e0311cbedbdb6">Superclass::MeasureType</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef <a class="el" href="classitk_1_1CacheableScalarFunction.html">CacheableScalarFunction</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CompositeValleyFunction.html#75a61fed2b15cd9afcf5145417e7ac3b">Superclass</a></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CompositeValleyFunction.html#2deb077c2428318ff0156fc1e1325e07">CompositeValleyFunction</a> (const <a class="el" href="classitk_1_1Array.html">MeasureArrayType</a> &classMeans, const <a class="el" href="classitk_1_1Array.html">MeasureArrayType</a> &classSigmas)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CompositeValleyFunction.html#10d0e29980ed7e24d5a905aabe187758">Evaluate</a> (<a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> x)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CacheableScalarFunction.html#fc91ba796ec07c4a8318106acbc00b5f">GetCacheLowerBound</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CacheableScalarFunction.html#6d1670fee265e1cc6673e7b2c6915838">GetCacheUpperBound</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CacheableScalarFunction.html#b9afe43734dd5521d0e8e382528c7615">GetInterval</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ed178340535ea8ad7ec6538042b591f4">GetLowerBound</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">long </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CacheableScalarFunction.html#dea9e0cfb540c895c7ae02f09bdcae0b">GetNumberOfSamples</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CompositeValleyFunction.html#4b66cedc2bc4dcc6c2c93cd5600563a1">GetUpperBound</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CacheableScalarFunction.html#6d08a844aad2210ad812989586ec3d5b">IsCacheAvailable</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CompositeValleyFunction.html#67f3c97956b625b5bef85f819c2e8e84">operator()</a> (<a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> x)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CompositeValleyFunction.html#fb6e3415f934e8841b439122baa54d1a">valley</a> (<a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> d)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ba6f7635e90e469fcaf7ecd4643dba2b">~CompositeValleyFunction</a> ()</td></tr>
<tr><td colspan="2"><div class="groupHeader"></div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CacheableScalarFunction.html#4ae0a32e403ff42f78565fd1f38a4de3">GetCachedValue</a> (<a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> x)</td></tr>
<tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CompositeValleyFunction.html#b7ff2d0e740c535936bf975996706560">AddNewClass</a> (double mean, double sigma)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CacheableScalarFunction.html#56633055451c4c5718e668043df845da">CreateCache</a> (double lowerBound, double upperBound, long sampleSize)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classitk_1_1CompositeValleyFunction.html#69aef5d9530beab3108a944a844bafbd">Initialize</a> ()</td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
Multiple valley shaped curve function.
<p>
Its functional form f(x) is : sum (valley( (x - mean[i]) / sigma[i] ) ) over i from 0 to the number of target classes where valley(x) = 1 - 1 / (1 + x^2 / 3)<p>
The plotting of the function return shows multiple lowest points at each mean[i] position. There are two more important shape parameters for this function, higher-bound and lower-bound. Upper-bound will be highest mean value among target classes' means + its sigma value * 9, and lower-bound will be lowest mean value among target classes' means - its sigma value * 9<p>
For example, if there are two target classes with their means at 4 and 6. The plotting may look like the following:<p>
| |********* ****** | * * | * * * | * * * * | * * * * | * * * * | * * ---+-----+------*------*------- | 2 4 6 |<p>
This is a part of the bias correction methods and implementaion that was initially developed and implemented by Martin Styner, Univ. of North Carolina at Chapel Hill, and his colleagues.<p>
For more details. refer to the following articles. "Parametric estimate of intensity inhomogeneities applied to MRI" Martin Styner, G. Gerig, Christian Brechbuehler, Gabor Szekely, IEEE TRANSACTIONS ON MEDICAL IMAGING; 19(3), pp. 153-165, 2000, (<a href="http://www.cs.unc.edu/~styner/docs/tmi00.pdf">http://www.cs.unc.edu/~styner/docs/tmi00.pdf</a>)<p>
"Evaluation of 2D/3D bias correction with 1+1ES-optimization" Martin Styner, Prof. Dr. G. Gerig (IKT, BIWI, ETH Zuerich), TR-197 (<a href="http://www.cs.unc.edu/~styner/docs/StynerTR97.pdf">http://www.cs.unc.edu/~styner/docs/StynerTR97.pdf</a>)
<p>Definition at line <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00096">96</a> of file <a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a>.</p>
<hr><h2>Member Typedef Documentation</h2>
<a class="anchor" name="0121eac6e8bebe212574930b0342013a"></a><!-- doxytag: member="itk::CompositeValleyFunction::MeasureArrayType" ref="0121eac6e8bebe212574930b0342013a" args="" -->
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<td class="memname">typedef <a class="el" href="classitk_1_1Array.html">Superclass::MeasureArrayType</a> <a class="el" href="classitk_1_1Array.html">itk::CompositeValleyFunction::MeasureArrayType</a> </td>
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<p>Reimplemented from <a class="el" href="classitk_1_1CacheableScalarFunction.html#e47e01c4f9242afa828ae8459fdbee15">itk::CacheableScalarFunction</a>.</p>
<p>Definition at line <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00105">105</a> of file <a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a>.</p>
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<a class="anchor" name="ebef7c7dec580890bca3d22149ee4751"></a><!-- doxytag: member="itk::CompositeValleyFunction::MeasureType" ref="ebef7c7dec580890bca3d22149ee4751" args="" -->
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<td class="memname">typedef <a class="el" href="classitk_1_1CacheableScalarFunction.html#3e6333600aacf7275e6e0311cbedbdb6">Superclass::MeasureType</a> <a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">itk::CompositeValleyFunction::MeasureType</a> </td>
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<p>
Cost value type.
<p>Reimplemented from <a class="el" href="classitk_1_1CacheableScalarFunction.html#3e6333600aacf7275e6e0311cbedbdb6">itk::CacheableScalarFunction</a>.</p>
<p>Definition at line <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00104">104</a> of file <a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a>.</p>
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<a class="anchor" name="75a61fed2b15cd9afcf5145417e7ac3b"></a><!-- doxytag: member="itk::CompositeValleyFunction::Superclass" ref="75a61fed2b15cd9afcf5145417e7ac3b" args="" -->
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<td class="memname">typedef <a class="el" href="classitk_1_1CacheableScalarFunction.html">CacheableScalarFunction</a> <a class="el" href="classitk_1_1CacheableScalarFunction.html">itk::CompositeValleyFunction::Superclass</a> </td>
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<p>
Superclass to this class.
<p>Definition at line <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00101">101</a> of file <a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a>.</p>
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<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="2deb077c2428318ff0156fc1e1325e07"></a><!-- doxytag: member="itk::CompositeValleyFunction::CompositeValleyFunction" ref="2deb077c2428318ff0156fc1e1325e07" args="(const MeasureArrayType &classMeans, const MeasureArrayType &classSigmas)" -->
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<td class="memname">itk::CompositeValleyFunction::CompositeValleyFunction </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classitk_1_1Array.html">MeasureArrayType</a> & </td>
<td class="paramname"> <em>classMeans</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const <a class="el" href="classitk_1_1Array.html">MeasureArrayType</a> & </td>
<td class="paramname"> <em>classSigmas</em></td><td> </td>
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<td>)</td>
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Constructor.
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<a class="anchor" name="ba6f7635e90e469fcaf7ecd4643dba2b"></a><!-- doxytag: member="itk::CompositeValleyFunction::~CompositeValleyFunction" ref="ba6f7635e90e469fcaf7ecd4643dba2b" args="()" -->
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<td class="memname">virtual itk::CompositeValleyFunction::~CompositeValleyFunction </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [inline, virtual]</code></td>
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Destructor.
<p>Definition at line <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00112">112</a> of file <a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a>.</p>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="b7ff2d0e740c535936bf975996706560"></a><!-- doxytag: member="itk::CompositeValleyFunction::AddNewClass" ref="b7ff2d0e740c535936bf975996706560" args="(double mean, double sigma)" -->
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<td class="memname">void itk::CompositeValleyFunction::AddNewClass </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"> <em>mean</em>, </td>
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<td class="paramtype">double </td>
<td class="paramname"> <em>sigma</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td><code> [inline, protected]</code></td>
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<p>Definition at line <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00160">160</a> of file <a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a>.</p>
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<a class="anchor" name="56633055451c4c5718e668043df845da"></a><!-- doxytag: member="itk::CompositeValleyFunction::CreateCache" ref="56633055451c4c5718e668043df845da" args="(double lowerBound, double upperBound, long sampleSize)" -->
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<td class="memname">void itk::CacheableScalarFunction::CreateCache </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"> <em>lowerBound</em>, </td>
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<td class="paramtype">double </td>
<td class="paramname"> <em>upperBound</em>, </td>
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<td class="paramtype">long </td>
<td class="paramname"> <em>sampleSize</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td><code> [protected, inherited]</code></td>
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Create the internal cache table and fill it with pre-evaluated values.
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<a class="anchor" name="10d0e29980ed7e24d5a905aabe187758"></a><!-- doxytag: member="itk::CompositeValleyFunction::Evaluate" ref="10d0e29980ed7e24d5a905aabe187758" args="(MeasureType x)" -->
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<td class="memname"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> itk::CompositeValleyFunction::Evaluate </td>
<td>(</td>
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<td><code> [inline, virtual]</code></td>
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<p>
Evalaute the function at point x.
<p>Reimplemented from <a class="el" href="classitk_1_1CacheableScalarFunction.html#75e1d4a0b20464a80d73df54e4c33d1c">itk::CacheableScalarFunction</a>.</p>
<p>Definition at line <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00140">140</a> of file <a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a>.</p>
<p>References <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00154">valley()</a>.</p>
<p>Referenced by <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00122">operator()()</a>.</p>
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<a class="anchor" name="4ae0a32e403ff42f78565fd1f38a4de3"></a><!-- doxytag: member="itk::CompositeValleyFunction::GetCachedValue" ref="4ae0a32e403ff42f78565fd1f38a4de3" args="(MeasureType x)" -->
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<td class="memname"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> itk::CacheableScalarFunction::GetCachedValue </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classitk_1_1CacheableScalarFunction.html#3e6333600aacf7275e6e0311cbedbdb6">MeasureType</a> </td>
<td class="paramname"> <em>x</em> </td>
<td> ) </td>
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<p>
y = f(x) = (approximately) cache_table(index(x)) Get the function return using the internal cache table NOTE: Since the index calculation needs conversion from double to int, truncation happens. As a result, the return values from Evaluate(x) and GetCachedValue(x) may not be same for the same x.
<p>Definition at line <a class="el" href="itkCacheableScalarFunction_8h_source.html#l00096">96</a> of file <a class="el" href="itkCacheableScalarFunction_8h_source.html">itkCacheableScalarFunction.h</a>.</p>
<p>Referenced by <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00122">operator()()</a>.</p>
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<a class="anchor" name="fc91ba796ec07c4a8318106acbc00b5f"></a><!-- doxytag: member="itk::CompositeValleyFunction::GetCacheLowerBound" ref="fc91ba796ec07c4a8318106acbc00b5f" args="()" -->
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<td class="memname">double itk::CacheableScalarFunction::GetCacheLowerBound </td>
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<td><code> [inline, inherited]</code></td>
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<p>
Get the lower-bound of domain that is used for filling the cache table.
<p>Definition at line <a class="el" href="itkCacheableScalarFunction_8h_source.html#l00079">79</a> of file <a class="el" href="itkCacheableScalarFunction_8h_source.html">itkCacheableScalarFunction.h</a>.</p>
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<a class="anchor" name="6d1670fee265e1cc6673e7b2c6915838"></a><!-- doxytag: member="itk::CompositeValleyFunction::GetCacheUpperBound" ref="6d1670fee265e1cc6673e7b2c6915838" args="()" -->
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<td class="memname">double itk::CacheableScalarFunction::GetCacheUpperBound </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [inline, inherited]</code></td>
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<p>
Get the upper-bound of domain that is used for filling the cache table.
<p>Definition at line <a class="el" href="itkCacheableScalarFunction_8h_source.html#l00076">76</a> of file <a class="el" href="itkCacheableScalarFunction_8h_source.html">itkCacheableScalarFunction.h</a>.</p>
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<a class="anchor" name="b9afe43734dd5521d0e8e382528c7615"></a><!-- doxytag: member="itk::CompositeValleyFunction::GetInterval" ref="b9afe43734dd5521d0e8e382528c7615" args="()" -->
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<td class="memname">double itk::CacheableScalarFunction::GetInterval </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [inline, inherited]</code></td>
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<p>
Gets the interval of each cell between the upper and lower bound
<p>Definition at line <a class="el" href="itkCacheableScalarFunction_8h_source.html#l00088">88</a> of file <a class="el" href="itkCacheableScalarFunction_8h_source.html">itkCacheableScalarFunction.h</a>.</p>
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<a class="anchor" name="ed178340535ea8ad7ec6538042b591f4"></a><!-- doxytag: member="itk::CompositeValleyFunction::GetLowerBound" ref="ed178340535ea8ad7ec6538042b591f4" args="()" -->
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<td class="memname">double itk::CompositeValleyFunction::GetLowerBound </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [inline]</code></td>
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<p>
Get energy table's lower bound.
<p>Definition at line <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00118">118</a> of file <a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a>.</p>
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<a class="anchor" name="dea9e0cfb540c895c7ae02f09bdcae0b"></a><!-- doxytag: member="itk::CompositeValleyFunction::GetNumberOfSamples" ref="dea9e0cfb540c895c7ae02f09bdcae0b" args="()" -->
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<td class="memname">long itk::CacheableScalarFunction::GetNumberOfSamples </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [inline, inherited]</code></td>
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<p>
Get the number of samples between the lower-bound and upper-bound of the cache table.
<p>Definition at line <a class="el" href="itkCacheableScalarFunction_8h_source.html#l00070">70</a> of file <a class="el" href="itkCacheableScalarFunction_8h_source.html">itkCacheableScalarFunction.h</a>.</p>
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<a class="anchor" name="4b66cedc2bc4dcc6c2c93cd5600563a1"></a><!-- doxytag: member="itk::CompositeValleyFunction::GetUpperBound" ref="4b66cedc2bc4dcc6c2c93cd5600563a1" args="()" -->
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<td class="memname">double itk::CompositeValleyFunction::GetUpperBound </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [inline]</code></td>
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<p>
Get energy table's higher bound.
<p>Definition at line <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00115">115</a> of file <a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a>.</p>
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<a class="anchor" name="69aef5d9530beab3108a944a844bafbd"></a><!-- doxytag: member="itk::CompositeValleyFunction::Initialize" ref="69aef5d9530beab3108a944a844bafbd" args="()" -->
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<td class="memname">void itk::CompositeValleyFunction::Initialize </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [protected]</code></td>
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<p>
calculate and save energy values
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<a class="anchor" name="6d08a844aad2210ad812989586ec3d5b"></a><!-- doxytag: member="itk::CompositeValleyFunction::IsCacheAvailable" ref="6d08a844aad2210ad812989586ec3d5b" args="()" -->
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<td class="memname">bool itk::CacheableScalarFunction::IsCacheAvailable </td>
<td>(</td>
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<td> ) </td>
<td><code> [inline, inherited]</code></td>
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<p>
Check if the internal cache table and its values are valid.
<p>Definition at line <a class="el" href="itkCacheableScalarFunction_8h_source.html#l00073">73</a> of file <a class="el" href="itkCacheableScalarFunction_8h_source.html">itkCacheableScalarFunction.h</a>.</p>
<p>Referenced by <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00122">operator()()</a>.</p>
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<a class="anchor" name="67f3c97956b625b5bef85f819c2e8e84"></a><!-- doxytag: member="itk::CompositeValleyFunction::operator()" ref="67f3c97956b625b5bef85f819c2e8e84" args="(MeasureType x)" -->
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<td class="memname"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> itk::CompositeValleyFunction::operator() </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> </td>
<td class="paramname"> <em>x</em> </td>
<td> ) </td>
<td><code> [inline]</code></td>
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<p>
Gets an energy value for the intensity difference between a pixel and its corresponding bias.
<p>Definition at line <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00122">122</a> of file <a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a>.</p>
<p>References <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00140">Evaluate()</a>, <a class="el" href="itkCacheableScalarFunction_8h_source.html#l00096">itk::CacheableScalarFunction::GetCachedValue()</a>, and <a class="el" href="itkCacheableScalarFunction_8h_source.html#l00073">itk::CacheableScalarFunction::IsCacheAvailable()</a>.</p>
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<a class="anchor" name="fb6e3415f934e8841b439122baa54d1a"></a><!-- doxytag: member="itk::CompositeValleyFunction::valley" ref="fb6e3415f934e8841b439122baa54d1a" args="(MeasureType d)" -->
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<td class="memname"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> itk::CompositeValleyFunction::valley </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classitk_1_1CompositeValleyFunction.html#ebef7c7dec580890bca3d22149ee4751">MeasureType</a> </td>
<td class="paramname"> <em>d</em> </td>
<td> ) </td>
<td><code> [inline]</code></td>
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<p>
Get an energy value for the valley.
<p>Definition at line <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00154">154</a> of file <a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a>.</p>
<p>Referenced by <a class="el" href="itkCompositeValleyFunction_8h_source.html#l00140">Evaluate()</a>.</p>
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</div><p>
<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="itkCompositeValleyFunction_8h_source.html">itkCompositeValleyFunction.h</a></ul>
</div>
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